Blackfin: check for anomaly 05000475
authorMike Frysinger <vapier@gentoo.org>
Tue, 3 Nov 2009 02:57:45 +0000 (02:57 +0000)
committerMike Frysinger <vapier@gentoo.org>
Wed, 25 Nov 2009 07:35:41 +0000 (02:35 -0500)
Parts that have on-chip L2 SRAM cannot safely utilize writeback caching
mode, so reject any attempts to use it.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
arch/blackfin/mach-common/arch_checks.c

index 9dbafcdcf4791e3ba7eb8522cf1b6de911c05b0a..f2ca211a76a09a4497b0b18714cac2df2e0fb8a5 100644 (file)
@@ -57,3 +57,8 @@
         (!defined(CONFIG_BFIN_EXTMEM_DCACHEABLE) && defined(CONFIG_BFIN_L2_WRITEBACK)))
 # error You are exposing Anomaly 220 in this config, either config L2 as Write Through, or make External Memory WB.
 #endif
+
+#if ANOMALY_05000475 && \
+       (defined(CONFIG_BFIN_EXTMEM_WRITEBACK) || defined(CONFIG_BFIN_L2_WRITEBACK))
+# error "Anomaly 475 does not allow you to use Write Back cache with L2 or External Memory"
+#endif